Molding machine



Aug. 23, 1932. JACKSON 1,873,412

MOLDING MACHINE Filed Dec. 14. 1929 2 Sheets-Shet 1 5 /v VENTOR Corn 1W Jae/40022 A TTORNE Y S Aug. 23, 1932. Q JACKSON 1,873,412

HOLDING MACHINE Filed Dec. 14. 1929 2 Sheets-Sheet 2 IN V EN TOR Corwll/ filo ($027 A TTOR/VEYS Patented Aug. 23, 1932 PATENT OFFICE CORWILL JACKSON, OF CHICAGO, ILLINOIS MOLDING MACHINE Application filed December 14, 1929. Serial No. 413,981.

My present improvements are especially designed by me for use in molding building blocks and like materials and particularly in practicing the method described and claimed in my application for Letters Patent filed January 10, 1929, Serial No. 331,668.

The main object of this invention is to provide a molding apparatus which is highly efficient in the molding of concrete building blocks and like material.

A further object is to provide a molding apparatus having very large capacity and one adapted to produce a superior product.

Objects relating to details and economics 35 of my invention will appear from the description to follow. The invention is defined and pointed out in the claims.

A structure which is a preferred embodiment of my invention is illustrated in the accompanying drawings,"in which:

Fig. 1 is a side elevation of my improved apparatus as embodied in'a truck, the portions of the feed means and the track being broken away, the apparatus being shown in one position by full lines and in another position by dotted lines. I

Fig. 2 is an end elevation looking from the right of Fig. 1, the track being shown in section,

Fig. 3 is an enlanqed detail view partially broken away and sectioned to show structural advantages. 4

Fig. 4 is a detail view of the vibrating unit partially broken away.

In the embodiment illustrated in the accompanying drawings, the supports 1 are mounted on the ends of the truck 2, the track 3 being provided with a truck so that the mold 4 may be brought into receiving rela tion relative to the concrete feed hopper 5 for the bonerete mixture, the truck being used to transport the mold to the place of cur-mg.

T he mold is supported by flexible hangers 6 preferably in the former endless belts, as illustrated.

Shafts 7 and 8 are mounted upon the upper ends of the supports 1 and provided with drums 9 and 10 respectively. The drums 9 are provided with pin-like teeth 11 engaging holes 12 in the hangers.

The shaft 7 is provided with a crank 13 so that the hanger may be adjusted on these drums. The shaft 7 is provided with a ratchet wheel 14 and coacting pawl or detent 15 for securing the dr'ums in their adjusted position.

The hanger is supported with a substantial slack between the drums as illustrated. The upper reach of the hanger is provided with studs 16 adapted to engage holes 17 in the mold so that the mold is removably support ed on the hangers which may be adjusted to support the mold in the horizontal position shown in Fig. 1 by full lines or in an inclined position as shown by dottedliiies in Fig. 1, this being effected by the adjustment of the hanger.

I provide means for vibrating the form or mold when in any of its adjusted positions, this in the "embodiment illustrated consisting of a U-shaped supporting member 18, one arm of which is provided with clamp members 19 and 20 connected by the screw2l so that they may be quickly secured to or released from the mold.

On the other or free arm of this support I mount a motor 22 having an unbalancing weight 23 on its shaft 24. The motor is carried by a bracket 25 adjustably mounted on the arm by means of the bolts 26 engaging a longitudinal slot 27 in the outer arm of the support.

The weight 28 preferably made up of units held together by the bolt 29 is also adjustably mounted on the arm, the bolt engaging a slot 30 in the arm so that the weight may be varied as well as adjusted on the arm.

The mold is provided with spaced memapparatus may therefore be adjusted to the character of the material used and the character of the part to be molded.

I have illustrated a rectangular mold'or mold for a rectangular object but it will be understood this is for convenience in illustration as the apparatus is especially desirable for use in molding irregular pieces or pieces having designs thereon such as ornamental building blocks and the like. I have not attempted to illustrate various other adapta tions or embodiments as I believe this dis closure will enable those skilled in the art to embody or adapt my improvements as may be desired.

Having thus described my invention, what I claim as new and desire to secure by Letters Patent, is:

1. In an apparatus of the class described, the combination with a mold, of spaced supports, shafts on said supports provided with drums, the drums of one shaft being toothed, flexible endless hangers supported by said drums with a substantial slack between the drums and PIOXldCtl with holes coacting with said toothed drums, the upper reaches of the hangers and the mold having co-engaging parts, a U-shaped support having mold engaging clamps on one arm, a motor provided with an unbalancing weight mounted on the other arm of said support, and an adjustable weight on such arm at the outside of the motor.

2. In an apparatus of the class described, the combination with a mold, of spaced supports, shafts on said supports provided with drums, the drums of one shaft being toothed, flexible endless hangers supported by said drums with a substantial slack between the drums and provided with holes coacting with said toothed drums, the upper reaches of the hangers and the mold having co-engaging parts, a U-shaped support having mold engaging clamps on one arm, and a motor provided with an unbalancing weight mounted on the other arm of said support.

3. In an apparatus of the class described, the combination with a mold, of spaced supports, shafts on said supports provided with drums, the drums of one shaft being toothed, flexible endless hangers supported by said drums with a substantial slack between the drums and provided with holes coacting with said toothed drums, the upper reaches of the hangers and the mold having co-engaging parts, a U-shaped support having mold engaging clamps on one arm, and a motor provided with an unbalancing weight adjustably mounted on the other arm of said support.

4. In an apparatus of the class described, the combination of spaced drums, a flexible endless mold hanger supported by said drums, one of said drums being'provided with an adjusting crank, the upper reach of the hang er having mold engaging means, a U-shaped support having mold engaging clamps on one arm, and a motor provided with an unbalancing weight mounted on the other arm of said support.

5. In an apparatus of the class described, the combination of spaced drums, a flexible endless mold hanger supported by said drums, one of said drums being provided with an adjusting crank, the upper reach of the hanger having mold engaging means, a U- shaped support having mold engaging clamps on one arm, and a motor provided with an unbalancing weight mounted on the other arm of said support.

6. In an apparatus of the class described, the combination of spaced drums, at flexible endless mold hanger supported by said drums, one of said drums being provided with an adjusting crank, the upper reach of the hanger having mold engaging means, a U-shaped support having mold engaging clamps on one arm, and a motor provided with an unbalancing weight adjustably mounted on the other arm of said support.

7 In an apparatus of the class described, the combination of a flexible endless hanger, supporting drums therefor rotatable for adjusting the hanger, the hanger having substantial slack between the drums, the upper reach of the hanger having mold engaging means, and a vibrating unit for the mold.

8. In an apparatus of the class described, the combination of a flexible endless hanger, supporting drums therefor rotatable for adjusting the hanger, the hangenhaving substantial slack between the drums, the upper reach of the hanger having mold engaging means, a vibrating unit comprising a U- shaped support, one arm of which is provided with mold engaging clamps, and a motor having an unbalanced shaft adjustably mounted on the other arm.

In witness whereof I have hereunto set my hand.

CORWILL JACKSON. 

